demm Hello, demm. I created 3 USB isos and still the same error about unable to load and mount kdeiso. But it does mount and work on 6-2017 iso. Also, no usb or any error in dmesg. Only thing I have not tried is creating usb iso using dd - don't know if this does anything. I have tried trying several usb ports just in case but no dice. What puzzles me is why the 6-2017 iso works on the same device using the same isowriter.
With my alienware 17 r3 laptop, I got into live mode with non-free but dmesg shows nouveau was loaded no invidia-tainted kernel. With my lenovo thinkpad w520 discrete graphics selected in BIOS, non-free nvidia does not go to live move at all . Thanks.